Revert "Updating nuget.config during build, use newest NuGets"
Revert "Updating nuget.config during build, use newest NuGets"

This reverts commit 9f160425a9df5156f359c0848238524581df9a05.

Azure/azure-mobile-apps-quickstarts,shrishrirang/azure-mobile-apps-quickstarts,Azure/azure-mobile-apps-quickstarts,shrishrirang/azure-mobile-apps-quickstarts,shrishrirang/azure-mobile-apps-quickstarts,shrishrirang/azure-mobile-apps-quickstarts,Azure/azure-mobile-apps-quickstarts,lindydonna/azure-mobile-apps-quickstarts,Azure/azure-mobile-apps-quickstarts,lindydonna/azure-mobile-apps-quickstarts,Azure/azure-mobile-apps-quickstarts,lindydonna/azure-mobile-apps-quickstarts,shrishrirang/azure-mobile-apps-quickstarts,Azure/azure-mobile-apps-quickstarts,lindydonna/azure-mobile-apps-quickstarts,shrishrirang/azure-mobile-apps-quickstarts,lindydonna/azure-mobile-apps-quickstarts,lindydonna/azure-mobile-apps-quickstarts